Experimental long-term survey of mid-infrared supercontinuum source based on As2S3 suspended-core fibers
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The evolution of supercontinuum generation in chalcogenide suspended-core microstructured optical fibers is studied with regard to their exposure to the room atmosphere. We report the experimental proof of aging-induced supercontinuum generation drift in chalcogenide microstructured fibers. Mid-infrared supercontinuum covering the 2.5–5.5-µm spectral region is demonstrated in a fresh and 7-month-aged counterpart As2S3 fibers, by means of a home-built multistage oscillator power amplifier delivering 300 fs pulses at a repetition rate of 43 MHz in the 3.0–4.1-µm range. Numerical simulations based on the generalized nonlinear Schrödinger equation confirm the significant alteration of supercontinuum generation due to increasing fundamental OH and SH absorption bands.
KeywordsSoliton Chalcogenide Glass Pump Wavelength Raman Gain Supercontinuum Generation
We acknowledge the financial support from the Conseil Régional de Bourgogne and the FEDER European program through the Photcom PARI program. This project has been performed in cooperation with the Labex Action program (contract ANR-11-LABX-0001-01).
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